Tropicultura (Jan 2002)
Contribution à la promotion de la culture du blé (Triticum aestivum L.) au Sud-Kivu, République Démocratique du Congo: Evaluation du potentiel de rendement de deux génotypes d'origine burundaise dans différentes zones agro-écologiques locales
Abstract
Contribution on Wheat Culture Development in South-Kivu, Democratic Republic of Congo.Yield-performance of Two Genotypes, from Burundi, in Various Local Agroecological Zones. In four sites (Lemera, Bugobe, Mulungu & Cifunzi), two genotypes (Romany & Kenya Nyangumi) were evaluated in contrasting agroecological conditions for their yield adaptibility, during two cropping seasons, from 1998 to 1999. Multilocational trials were set up, in different sites, following a split-plot experimental design, with repeated measurements during two cropping seasons. Genotypes were the main plots and the manures, the subplots. The subplots were randomized with main plots and replicated four times. Differences between environments, genotypes and cropping seasons were significant for the grain yield. The effects of genotypes by environment (G X E) interaction, for grain yield was significant. The general mean yield obtained when genotypes are combined or not with organic fertilizers is of 1.46 t/ha. The best yields were recorded at Mulungu (1.83 t/ha) and Lemera (1.61 t/ha) sites with Kenya Nyangumi genotype. The high yields were recorded at Bugobe (1.51 t/ha) and Lemera (1.88 t/ha) sites with Romany genotype. The application of organic fertilizers increase the yield of genotypes up to 10- 36%.
